Door-check.



PATENTED. JAN. 29, 1907.

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PATENTED JAN. 29, 1907.

W. H. BROTHERS.

DOOR CHECK.

APPLICATION FILED FEBf. 1906.

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UNTTED STATES PATENT ornion.

WILLIAM H. BROTHERS, OF CLEVELAND, OHIO, ASSIGNOR TO THE COLUM- BIANHARDWARE COMPANY, OF CLEVELAND, OHIO, A CORPORATION OF OHIO.

DOOR-CHECK.

Specification of Letters Patent.

Patented Jan. 29, 1907.

T0 0,7,7 whom, t pray/concern:

Be it known that I, WILLIAM H. BROTHERS, a citizen of the United States,residing at Cleveland, in the county of Cuyahoga and State of Ohio, haveinvented certain new and useful Improvements in Door-Checks, of whichthe following is a specification.

This invention relates to door-checks of the automatic variety and theobjects are to provide a door-check, whether for single or double actingdoors, which is simple and efficient and which by the act of opening thedoor is set or shifted so as to afford a check or obstacle to theclosing of the door.

With these and other objects in view my invention consists of certainfeatures of construction and combinations of parts, to be hereinafterdescribed and then particularly pointed out in the claims.

In the accompanying drawings, showing desirable forms of door-checksembodying my invention, Figure 1 is a sectional view of a portion of adouble-acting door and its doore frame, the check being shown in plan,full Ilines-showing the position of the parts when the door is closedand the dotted lines the position of the parts when the door is about tobe shut. check proper. Fig. 3 is a longitudinal section on the line 3 3,Fig, 2. v Fig. 4 is a front elevation of the tappet to be mounted on thedoor for actuating the check proper. Fig. 5 is a perspective view of therocking check member. Fig. 6 is a modification of the device. Fig. 7 isa transversesection of amodified form of the device for single-actingdoors, the door and door frame or casing being also in section; and Fig.8 is a perspective view of the mount for supporting the door-check whenused in connectionwith single-acting doors.

Referring to Figs. 1-5, inclusive, the door frame or casing a and thedouble acting door Z) are provided with my improvements. For the purposeof mounting the door-ch eck proper in a suitable mortise a in the door-1 frame, if desired, and for properly supporting the parts it isprovided with a housing or casing c, preferably of cylindrical shape. Atthe front end of the said housing is a head or plate d, which is provided with a pair of ears e, between which the rocking member of thedoor-check (shown clearly in Fig. 5) is mounted. Said rocking membercomprises Fig. 2 is an end view of the door-v side pieces f, which areof suitable shape,

preferably trifurcated, and which are connected by means of across-piecef. The said cross-piece with theside pieces are centrallybored or perforated to provide an opening f2, to receive a pin g, onwhich the rocking member rocks, said pin being driven y .strike-rollsare arranged at the front portion of the door-check, one at each side ofthe longitudinal axis of the housing c and, with the frame composed ofthe parts ff, may be rocked from the full-line position shown in Fig. Ito the dotted-line position there shown, or to a correspondingdotted-line position at the other side of the fulHine position. Thereason of this will be hereinafter stated. The said back; roll 71,2bears constantly upon the plunger j, which is guided within the housingc and which is pressed constantly forward by a suitable spring 7c,located behind it. The tension of the spring 7c may be varied by meansof a tension-block 7c', guided in said housing back of the Spring, andwhich is adjusted by means of a set-screw 7, held firmly in position bya jam-nut Z. The tension of the spring 7cis adjusted, preferably, beforethe door-check is applied to the doorframe; but it is obvious that itmay be adjusted afterward through a suitable side opening cut in thedoor-frame to enable access to the set-screw vand jam-nut. 4The tensionof the Spring may be varied on account of shrinkage in the door-frame orfor varying the resistance of the rocking member. Said plunger y' ispreferably provided with a centering groove or recess y, into which theback roll 71,2 seats for centering the rocking member into the fullelineposition, this being the position when the door is closed. Such groovealso tends to prevent rattling or vibration of the parts and door.

In place of the back roll 7b2 may be substituted a contact-block m,(shown in Fig, 6,) said block having a flat face m and the plungerhaving a corresponding flat face m2, so that when the rocking member isin the IOG full-line position said fiat faces will bear derectly againsteach other, tending to hold the parts centrally.

For the purpose of' actuating the doorcheck the door l) preferablycarries an actu- 1 ating device comprising a base-plate n, provided withlugs 7M, between which is mounted the tappet-roll o. This actuatingdevice and the door-check proper are mounted in any convenient positionupon the door and doorrame, and they are set relatively toeach other, soas to attain the best results and the most workmanlike appearance. Thedoorcheck proper should be sunk a suitable distance within thedoor-frame held by suitable screws c, so that a small portion of eachstrike-roll 72, h projects beyond the frame in the path of the actuatingdevice or tappet on the door. This will assure that portions of saidstrike-rolls will project beyond the doorframe when the rocking checkmember is in centralized position, as shown by full lines in Fig. 1. Inthis position the tappet-roll 0 takes or sets into the gap p between thestrike-rolls. Now when the double-acting door is in shut position, Fig.1, and the door is opened the tappet-roll strikes against the`strike-roll h and rocks the check member to dotted-line position, whereit is held by the spring-actuated plunger j. Vhen the door has passedthe strike-roll 7L, the door can be opened as desired. In thisdotted-line position of the parts the opposite strike-roll h will beprojected considerably beyond its normal position and will be directlyin the path of the tappet-roll 0 when the door is shut again. Uponshutting the door the said tappet-roll will strike the roll h, and ifsuiiicient force, as by slamming the door shut, has been exerted thecheck member will be rocked entirelyover to the opposite side and thedoor will pass the strike-roll i/ On the rebound, however, which will bewith less Jforce, the tappeteroll will strike the nowprojected roll 7iyand will rock the check member to the full-line position, Fig. l, andthe door will then be held in centralized and shut position. It isobvious that whether the double-acting door be opened in one or theopposite direction the door-check will always act the same, dependingupon the degree of force exerted upon the door.

For single-acting doors the door-check is preferably mounted as shown inFigs. 7 and 8. The same parts are used for this purpose as are used fordouble-acting doors; but ae additional device is employed for settingthn door-check into proper relative position to the tappet-roll and theplane of the closed door when first applied and also for setting thesame after the woodwork has warped or shrunk. For this purpose aAbase-plate is mounted directly upon the side of the door frame orcasing, or it is set in a mortise with the other parts and is suitablyfixed by means of screws q. An adjusting member r is connected with oneend of the base q by means of a hinge-pin s. This adjusting member 1 isprovided with a socket 9^ to receive the housing c of the door-check,which is suitably secured to said adjusting member, as by screws t. Toadjust the inclination of the adjusting member r, as also that of thedoor-check proper, relative to the tappet-roll, a screw spindle or stemu is fixed to and projects from that end of the base-plate opposite thehinge s. This screw-spindle a passes through an enlarged opening o inthe adjusting member 7, and the latter is adjusted and set in positionby means of nuts w w, screwed onto the screw-spindle at opposite ends ofsaid opening i).

The invention is obviously not limited to the parts constructed andarranged as described, as various modifications other than thosementioned will suggest themselves to skilled mechanics without departingfrom the scope and spirit thereof.

Having thus described my invention, what I claim as new therein, anddesire to secure by Letters Patent, is-

1. In a door-check, a rocking check member provided with strike-rollsspaced apart to be struck alternately during 'the opening and Closing ofa door.

2. In a door-check, a rocking check member provided with strike-rollssuitably spaced apart and a tappet to strike said rolls alternatelyduring the opening and closing of a door.

3. In a door-check, a rocking check member provided with strike-rolls,and a tappetroll, said check member and tappet-roll being adapted to bemounted for coperation, one of them on a door-frame and the other on thedoor.

4. In a door-check, a spring-influenced rocking check member providedwith strikerolls, one on each side of a given point, and separated by adoor-centering gap.

5. In a door-check, a rocking check member having a doorcentering gapand rolling contact-surfaces on both sides of a given point of saidmember and on each side of said gap.

6. In a door-check, the combination of a suitably-supported rockingcheck member, a spring-actuated plunger acting on the member, and meansfor adjusting the tension of the spring.

7'. In a door-check, a rocking check member comprising a frame and threeangularlyarranged rolls carried by the same.

8. In a door-check, a rocking check member having two strike-rollsarranged one on each side of a given point and a back roll, incombination with a spring-actuated plunger bearing on the back roll.

9. In a door-check, a rocking check member having two strike-rollsarranged one on IXO eaeh side of a given point and a back roll, incombination with a spring-actuated plunger, and means for adjusting thetension ofv the spring.

10. In a door-cheek, a pivoted Cheek member, in combination with aspring-actuated plunger bearing upon the same at-a point back of itspivot.

11. In a door-cheek, the combination of a rocking member having rollingContact or checking surfaces on both sides of a given point of saidmember, and a tappet to be earried by the door for alternately strikingsaid surfaces during the opening and Closing of the door.

l2. In a door-cheek, the combination of a baseplate, a member pivoted atone end to said plate and having a socket in said end, a door-cheekproper at said soeketed. end of the baseplate, the same consisting of arocking member arranged to momentarily obstruct or interfere with theclosing movement of the door, spring-pressure means in said socketacting on said door-Check proper, and adjusting devices acting on thepivoted member to adjust the door-cheek proper relatively to the path ofmovement ofthe door.

Signed at Cleveland, Ohio, this 27th day 'of January, 1906.

WILLIAM H. BROTHERS.

Witnesses:

THOMAS BIGGERSTAFF, GUsTAv F. LAMP.

